linux-kernel - Re: [PATCH] add hardware I2C support for ARM IMX23

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Date:	Wed, 28 Nov 2012 17:44:49 +0100
From:	Sander van Ginkel <sander@...-ginkel.eu>
To:	Wolfram Sang <w.sang@...gutronix.de>
CC:	linux-kernel@...r.kernel.org, kernel@...gutronix.de,
	shawn.guo@...aro.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] add hardware I2C support for ARM IMX23

tested with:
CONFIG_I2C_MXS=m
CONFIG_I2C_MXS=y

in combination with CONFIG_GPIO_MXS enabled and disabled

used kernels: 3.6 and 3.7.0-rc6

My I2C slave is a PCF8575 i/o expander with some LEDs at the output.
These are controlled through sysfs.

Just tested with "i2cdetc -y -r 0" that crashes with  "BUG: soft lockup 
- CPU#0 stuck for 22s!"
according to the docs (IMX23RM.pdf) the interrupts for I2C are 26 and 27 
that why I assigned these two in the dts.






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